Sheeps Wool
Have you ever thought about using sheep’s wool for your home insulation? Here’s a few pros/cons:
–Sheeps wool will retain it’s insulating properties when wet! Traditional fiberglass insulation loses it’s capacity to insulate when exposed to moisture. Obviously we don’t want to have leaks in our attics or through the siding, but this is a nice benefit for a wet climate.
–Sheeps wool is a non-irritating substance. It can be installed without using protective clothing or gloves — which can be a big plus when navigating already cramped attics.
–Given that it is a raw material, there is very little energy consumed in the production process.
–The wool does not settle over time, so there is no decrease in performance as the material ages.
–Most wool is treated with borate to prevent pest intrusion, mold, and increase the fire resistance. Repeated wetting and drying can leach out the borate treatment, decreasing pest/fire resistance.
–It is more sound absorbent than fiberglass insulation due to it’s density.
Mineral Wool
This is another great product that features many of the same benefits as sheeps wool, but uses a waste material called Slag. As per wikipedia : slag is a byproduct of the metal refining process that is largely limestone or dolomite which has absorbed phosphate from the molten iron. Most of my study here is on a substance called Roxul, which is produced in Canada and not yet for use in the United States. Apparently it is pretty common there, and can be found at Home Depot (canadian). Some of the pros/cons:
–Mineral Wool is made from a waste material, which diverts materials from the landfills
–Since it is made of rock, it is very fire retardant. This product does not burn unless subjected to temperatures over 2150 degrees fahrenheit.
–Like sheep’s wool, it does not lose it’s insulating properties when wet. Additionally you do not have to worry about repeated moisture leaching out the pest/fire retardant properties (as in wool).
–It has a higher density than fiberglass, allowing for better soundproofing of your home.
–A potential downside is that it does irritate your skin like fiberglass insulation, so protection must be used during install.
Bottom line: Both are good products and have an increased cost over traditional fiberglass insulation. I find myself attracted to the advent of sheep’s wool due to the non-irritating properties. Particularly for the exposed attic areas! Remember these types of upgrades can help in the future marketing of your home. I hope you found this helpful, and that you have a good start to your week.
Brian